Through discussion on design and regulation of hydraulic system of straightening and withdrawal machine for profiled blank caster,structure and performance of characteristic guiding overflow valve adjusted by motor are deseribed.

Via the discussion about accurate distributing of blast stuff,the significance of stuff flow adjusting valve control precision is delinated.

Numerical simulation of optimum design of large diameter cyclic type regulating valve;

And the flow regulating valve with multi-orifice and inundated jacket used in the joint section of YRDP for the first time in China can regulate and control the flow and pressure of waterline flexibly, which provides convenience for the automatized dispatching and controlling along the whole waterline in joint section of YRDP.

This paper uses single-chip computer and feedback measuring device and combines step motor to adjust the flow regulating valve precisely.

The use of flow control valves in the branch line of relay stations of long-distance gas pipeline can effectively regulate gas flow so as to protect relevant process equipment.